|Team 1|Agg.|Team 2|1st leg|2nd leg|
|---|---|---|---|---|
|England|2–3|France|1–1|1–2|
|Czech Republic|0–3|Germany|0–2|0–1|
|Hungary|1–2|Italy|1–1|0–1|
|Serbia and Montenegro|5–2|Croatia|3–1|2–1|
|Ukraine|5–4|Belgium|2–3|3–1|
|Russia|1–4|Denmark|0–1|1–3|
|Switzerland|2–3|Portugal|1–1|1–2|
|Slovenia|0–2|Netherlands|0–0|0–2|

Question: how many different countries participated?
Answer: 17